<%@ page import="java.util.ArrayList" %>
<%@ page import="java.util.List" %>

<%@ page import="java.sql.*" %><%--
  Created by IntelliJ IDEA.
  User: DELL
  Date: 2018/3/20
  Time: 15:46
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title></title>
</head>
<body>
<h1>这是一个jsp文件.</h1>

<%
    out.write("hello world!");
    out.write("<h1>hello world!<h1>");

%>


<style type="text/css">
    td, th {
        border: 1px solid #000;
        padding: 1px;
    }

    table {
        border: 1px solid #000;
        border-collapse: collapse;
    }
</style>

<table>
    <thead>

    <tr>
        <th>编号</th>
        <th>用户名</th>
        <th>密码</th>
        <th>操作</th>

    </tr>
    </thead>

    <tbody>
    <%
        class User {
            int id;
            String name;
            String password;

            public User(int id, String name, String password) {
                this.id = id;
                this.name = name;
                this.password = password;
            }

        }

        List<User> list = new ArrayList<User>();
//        list.add(new User(1, "qwe", "123"));
//        list.add(new User(2, "asd", "123"));
//        list.add(new User(3, "zxc", "123"));
//        list.add(new User(4, "poi", "123"));

        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;

        String sql = "select * from t_users";

        Class.forName("com.mysql.jdbc.Driver");

        try {
            connection = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/sctu_javaweb_2018",
                    "root",

                    "123456"
            );
        } catch (SQLException e) {
            e.printStackTrace();
        }
        statement = connection.createStatement();
        resultSet = statement.executeQuery(sql);

        while (resultSet.next()) {
            int id = resultSet.getInt(1);
            String username = resultSet.getString(2);
            String password = resultSet.getString(3);

            User user = new User(id, username, password);
            list.add(user);
        }

        resultSet.close();
        statement.close();
        connection.close();

        for (User user : list) {
            out.write("<tr><td>" + user.id + "</td><td>" + user.name + "</td><td>" + user.password + "</td><td><a href='userdelete.jsp?id=" + user.id + "'>删除</a></td></tr>\n");

        }
    %>
    </tbody>
</table>
</body>
</html>
